AHK has been working great for me over the years. My addresses, snippets of emails, expansions are all stored in an ahk file. I use various email addresses for different sites; so a@a would become aj(at)ajonit(dot)com or a@l would become admin(at)learnqtp(dot)com. The possibilities are endless.
Few year's back I created a video for my blog readers and published an AHK template. You may download it here http://www.learnqtp.com/get-productive-with-automation-autoh...